Re: caching NSCollectionView

FROM : Georg Seifert
DATE : Mon Jun 23 22:21:48 2008

>> Does anybody got saving the item views working. I filed a but at 
>> apple about
>> this but i was curios if anyone found a workaround.

>
>  The answer to this question depends entirely on what you're trying
> to accomplish (and how you have things wired). Unless you have a very
> good reason, however, you're probably going about this the wrong way.
> That is, the views should be dictated by the objects they represent.
>
>  If you store all the states (sort order, etc.) in the model objects
> you represent with the collection view and its items, all you need to
> do is restore those model objects (assuming they're wired up to your
> collection view) and they should be working just fine (and with no
> effort once everything's set up if you're using Core Data and
> Bindings).
>
>  So ... why are you trying to save the views?


the NSColletionView is bound to an array of 300-2000 instances of 
myClass. If I filter this array (setting a predicate on the 
ArrayController) and than change back to see all Elements, the 
CollectionView regenerates all the item views for the elements I did 
not saw during filtering. This takes several second (on my Powerbook).

To save the viewItems for a later use would solve the speed issue.

Are there better approches speeding things up??

Thanks
Georg